Knob attachment.



Patented Nov. 25, I902.

No. 7|4,4as.

' S. FADEB."

KNOB ATTACHMENT.

-Applieation filed July 23, 1902.)

(No Model.)

N VE N 70/? 5111a sfiader BY HNEY RS co. PHOTO-LITRDIUWIASNINGTON, n, c.

UNIT D STATES PATENT FFICE.

SILAS FADER, OF VANCOUVER, CANADA.

KNOB ATTACHMENT.

SPEGIFIdATIONfox-ming part of Letters Patent N 0. 714,466, dated November 25, 1902. Application filed July 23, I902. Serial No. 116,685. (No model.)

To all whom-it may concern.-

.of the Dominion of Canada, residing at Vanoouver, in the Province of British Columbia, Canada, have invented a new and useful Door- Handle Attachment, of which the following is a specification.

My presentin'vention is in the nature of an improved door-knob attachment; and it seeks to provide a simple and economical'construction of parts capable of being easily adjusted for obtaining a close and accurate fitting of the knob and spindle members; and the said invention consists in certain details of construction and novel combinations vof parts, all of which will hereinafter be fully explained, and specifically pointed out in the appended claims, reference being had to the accom panying drawings, in which Figure 1 is a longitudinal door-knob attachment. Fig. 2 is across-section thereof on the line a a of Fig. 1. Fig. 3 isa similar view on the line b b of Fig. 1. Fig. 4 is a detail longitudinal section of a modified form of the nut and knob-neck connection, and Fig. 5 is a similar view of a further modification hereinafter referred to.

In the drawings, 2 designates the knobspindle, square in cross-section; '3, the knob, which has a neck or hub portion 3 and 4 the door-plate, which is secured in the usual manner and provided with a conical bearing-surface 4? surrounding its spindle-aperture, as shown.

Theouter end of the spindle is threaded at its corners only, as indicated by 2?, whereby to retain the flat surfaces of its sides to coact with the opposing flat sides of the socket 3 in the knob-neck,which is freely slidable on the outer threaded portion of the spindle.

5 designates a nut for rigidly holding the knob with the spindle and for effecting a close spindle.

and accurate adjustment of the knob and At one end of the nut 5 is a conical bearing-surface 5 forengaging with the conical bearing on the plate 4, and at its outer section of my together under ordinary conditions.

, s beveled, as shown, and in the practical ad- Be it known thatI, SILAS FADER, a citizen;

justment of the nut on the knob-neck the eX- tension of the nut, which in the form shown in Fig; 1 is in the nature of an annular band, is fitted over the flange 3 and is headed or compressed thereon in frictional contact therewith, whereby to join the nut 5 with the neck and hold the same in axial alinement with the neck 3 of the knob.

The thread of the nut 5 is designed to snugly coact with the threads on the spindle 2, and the band portion 5 secures the nut to the knob in such manner that under the initial fitting or starting of the nut on the spindle the same turns with the knob as a fixed portion thereof, and under a wrench action it will rotate on the knob-neck for the purpose presently explained.

So far as described the manner in which my attachments are operably adjusted is as follows: The nut 5 is entered on the threaded end of the spindle 2 and is screwed upon said spindle by turning the knob until the outer end of the spindle reaches the socket portion 3 of the knob-neck. The nut is then screwed home to a close and accurate fit by wrench or lever power sufficient to rotate the nut on the knob-neck until the spindle is drawn out sufficient to effect a close engagement of the conical bearing-faces 0f the nut and the plate 4. The n at in its final adjustment may be turned by any suitable wrench or clamping-pliers; but to provide a simple means and sufficiently inexpensive to admit of the same being supplied with each set of knobs I prefer to use a type of wrench indicated in dotted lines in Fig. 3, the nut having a socket to receive the grip-fingers thereof, as shown. The

particular. form of the opposing faces of the knob-neck and the nut to provide the frictional contacting thereof, as hereinbefore explained, may be varied or modified from What is shown in Fig. 1. For instance, the member 3* of the knob-neck may be in the nature of an abrupt annular head, as shown in Fig.

4, against which the end of the band 5"* may be compressed or tightly beaded in any wellknown manner to hold the nut and the knob In the construction shown in Fig. 4 the band 5 is shown as a separate member on the nut.

In Fig. 5 the same construction of parts is shown as in Fig. 1, except the clamping extension 5 is shown as continued from its frictionallyg-engaged portion to form a tubular bearing 5 for snugly holding the neck of the knob, and thereby provide against its wabbling or having loose play in case the spindle and the knob-socket thereof are not fitted accurately against lost motion. To further increase friction between the nut and the knob, I may interpose at the contact of the knobneck and nut a-washer 6, of paper or similar material. (See Fig. 4E.)

Having thus described my invention, what I claim is A knob attachment comprising in combination Wit-l1 an apertured member havinga conical bearing surrounding the aperture, a square spindle rotatable and slidable in the said aperture, a knob having a neck portion SILAS FADER.

In presence of- ROWLAND BRITTAIN, ELLICE WEBBER. 

